Effect of Bamboo Sawdust Substrate and Strain Planting Density to Yield and Nutritional Quality of <i>Dictyophora echinovolvata</i>
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Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (6): 1100-1107.DOI: 10.3969/j.issn.1000-2561.2020.06.005

• Crop Culture and Nutrition, Genetic BreedingCrop Culture and Nutrition, Genetic Breeding • Previous Articles     Next Articles

Effect of Bamboo Sawdust Substrate and Strain Planting Density to Yield and Nutritional Quality of Dictyophora echinovolvata

PENG Chao1,AI Wensheng1,*(),XIE Yunfan2,SHI Yanfei2,ZHONG Yi2,LI Nan2   

  1. 1. Institute of Bamboo Research, Hunan Academy of Forestry, Changsha, Hunan 410004, China
    2. Yongzhou Forestry Institute, Yongzhou, Hunan 425000, China
  • Received:2019-09-20 Revised:2019-10-19 Online:2020-06-25 Published:2020-07-30
  • Contact: AI Wensheng

Abstract:

The effect of the ratio of bamboo sawdust substrate and strain planting density to the yield and nutritional quality of Dictyophora echinovolvata was discussed by the orthogonal design to screen the optimal combination and to provide a scientific technical support for D. echinovolvata cultivation. The results showed that the average fresh yield was 3.51 kg/m2, and the percentage of crude protein, crude fiber and total sugar was 18.78%, 21.19% and 37.79%, respectively. There were highly significant differences of yield, crude protein, total sugar among treatment combinations (P<0.01), and there was significant difference of crude fiber (P<0.05). The yieldwassignificantly affected by bamboo sawdust substrate weight and planting density, while the nutrient composition was almost not influenced by bamboo sawdust substrate weight and planting density. The yield of the strain planting density 600 g/m2was 4.54 kg/m2, which was significantly higher than those of the strain planting density 400 g/m2 and 800 g/m2. The yield of 16 kg/m2sawdust substrate was 3.95 kg/m2, which was higher than those of 8.0 kg/m2 and 12 kg/m2sawdust substrate. Crude protein, crude fiber and total sugar were highly affected by the interaction of the ratio of bamboo sawdust substrate and strain planting density. Range analysis suggested that planting density had higher effect than sawdust substrate to yield, protein and crude fiber, and there was an opposite effect on total sugar content. The range of expenditure/income ratio was (1∶3.77) to (1∶9.32),of which 16 kg bamboo sawdust substrate with cultivated 600 g/m2 had the highest output value, 54.9 yuan per square meter, with a corresponding expenditure/income ratio 1∶6.62. The mass investment of sawdust substrate and strain planting density had no positive correlation to output value. It was suggested that although the nutrient composition would not be changed by the ratio of bamboo sawdust substrate and strain planting density, an optimized combination of the two would have positive effect both in the yield and expenditure/income ratio of D. echinovolvata.

Key words: Dictyophora echinovolvata, sawdust substrate, fungi bag weight, yield, nutrient composition, expenditure/ income ratio

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